hehe .. i know a cheap way. it takes some time firast, but then it becomes faster.
you know when you die your power moves towards the server avarage.
so this is the plan: first u two fight for a while, until someone becomes ssj (choose gohan or trunks for fast transformation).
now, once someone reaches ssj, say player1 is ssj2 and player2 is normal. player1 is most likely around 2mil, player2 is around 1mil.
now player2 kills himself several times till he reaches 2mil.
player2 transforms.
player2 is 4mil and player1 is 2mil.
player1 keeps killing himself (in normal state) till he reaches 4 mil.
player1 tranforms.
playerone now has 8mil
and so on.. i do it with bots.